Aidan MacDonald 4dd3c2b33e codecs: m4a: improve seek accuracy ... Seeking doesn't work well in M4A files with very few chunks due to the seek method used (chunk based using the info in the 'stco' atom). According to libm4a/demux.c the expected seek resolution using this method is 1/4 to 1/2 seconds. However, ffmpeg generates files with a 1 megabyte chunk size, so the resolution is much worse than expected on some files: around 30-40 seconds at 256kbps. There was a bug with the seek position reported back to Rockbox: the codec pretended it could seek exactly to the requested sample, but it would only seek to the start of a chunk. This could leave the UI in a confusing state because the real playback position was different from what the elapsed time showed. Fix this by recalculating the reported sample position using the chunk start. To fix the low seek accuracy, use the table in the 'stsz' atom to skip individual packets within a chunk. This is very accurate, but it takes a lot of RAM to allocate the table. Currently the table is not allowed to use more than half of the codec RAM, which should suffice for short files on most targets. On files where the table is too large the codec will fall back to the less accurate chunk-based seek method. Change-Id: Ide38ea846c1cdd69691e9b1e1cd87eb0fa11cf78		2022-05-02 12:16:21 -04:00
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demac	libedemac: ARMv7 asm code is for NEON-equipped processors only	2020-04-15 00:35:35 +02:00
lib	[3/4] Completely remove HWCODEC support	2020-07-24 21:20:13 +00:00
liba52	Document intentional fallthroughs + fix harmless unintended ones	2021-08-04 18:59:46 +00:00
libalac	fixed alac_set_info() issues.	2019-07-25 18:16:48 -04:00
libasap	Fix codecs in simulator builds on Windows	2017-01-15 21:46:19 +01:00
libasf	Support MP3 audiostreams embedded in ASF containers.	2021-02-28 16:11:54 +00:00
libatrac	Add codecs to librbcodec.	2012-04-25 22:13:20 +02:00
libayumi	codecs: Add support for the 'VTX' ZX Spectrum chiptunes format.	2020-10-09 11:39:25 -04:00
libcook	iPod Classic: disable IRAM1	2018-07-30 18:50:27 -04:00
libfaad	iPod Classic: disable IRAM1	2018-07-30 18:50:27 -04:00
libffmpegFLAC	flac fix dumb typo	2021-03-03 02:58:34 +00:00
libgme	rbcodec: Fix typo in include guard	2021-04-06 17:27:06 +01:00
libm4a	codecs: m4a: improve seek accuracy	2022-05-02 12:16:21 -04:00
libmad	build: Nuke the ASMFLAGS workaround for gcc 3.4.x	2021-07-08 20:47:30 -04:00
libmusepack	iPod Classic: disable IRAM1	2018-07-30 18:50:27 -04:00
libopus	Sync opus codec to upstream git	2021-04-23 14:23:04 +00:00
libpcm	libpcm: Get unbranded structure tag out of my way.	2017-11-06 20:06:08 -05:00
librm	Third attempt to shut up the warble build printf() warning.	2018-12-28 07:57:23 -05:00
libspc	iPod Classic: disable IRAM1	2018-07-30 18:50:27 -04:00
libspeex	misc: Fix up a few warnings uncovered by LTO	2021-07-15 18:37:42 +00:00
libtremor	Clean up places that use #if defined(CPU_ARM | CPU_COLDFIRE | CPU_MIPS)	2021-03-04 14:14:33 +00:00
libtta	Add codecs to librbcodec.	2012-04-25 22:13:20 +02:00
libwavpack	Limit more variables to file scope	2015-01-11 21:40:51 +01:00
libwma	iPod Classic: disable IRAM1	2018-07-30 18:50:27 -04:00
libwmapro	wmapro: Backport multiple fixes	2020-10-28 02:12:01 +00:00
libwmavoice	build: Put all codec optiomization definitions in one place	2018-12-25 14:17:29 -05:00
a52.c	Improved seeking in a52 codec	2018-12-22 19:54:40 -05:00
a52_rm.c	Realmedia related codecs fixes and enhancements	2018-12-22 20:12:10 -05:00
aac.c	codecs: Fix elapsed time calculation for large files	2018-10-29 19:50:34 +01:00
aac_bsf.c	Fix logf warnings in more codecs	2020-07-03 03:43:47 +00:00
adx.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
aiff.c	Add support for ID3 tags embedded in AIFF files	2020-07-15 18:30:07 +00:00
aiff_enc.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
alac.c	codecs: Fix elapsed time calculation for large files	2018-10-29 19:50:34 +01:00
ape.c	codecs: Fix elapsed time calculation for large files	2018-10-29 19:50:34 +01:00
asap.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
atrac3_oma.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
atrac3_rm.c	Realmedia related codecs fixes and enhancements	2018-12-22 20:12:10 -05:00
au.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
ay.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
codec_crt0.c	Add codecs to librbcodec.	2012-04-25 22:13:20 +02:00
codecs.h	[3/4] Completely remove HWCODEC support	2020-07-24 21:20:13 +00:00
codecs.make	rbcodec: Fix typo in makefile	2021-07-25 15:55:36 +01:00
cook.c	Realmedia related codecs fixes and enhancements	2018-12-22 20:12:10 -05:00
flac.c	misc: Fix up a few warnings uncovered by LTO	2021-07-15 18:37:42 +00:00
gbs.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
hes.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
kss.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
mod.c	misc: Fix up a few warnings uncovered by LTO	2021-07-15 18:37:42 +00:00
mp3_enc.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
mpa.c	Support MP3 audiostreams embedded in ASF containers.	2021-02-28 16:11:54 +00:00
mpc.c	codecs: Fix elapsed time calculation for large files	2018-10-29 19:50:34 +01:00
nsf.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
opus.c	opus: shrink stack usage by nearly 700 bytes	2020-07-15 15:09:08 +00:00
raac.c	Realmedia related codecs fixes and enhancements	2018-12-22 20:12:10 -05:00
sgc.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
shorten.c	codecs: Fix elapsed time calculation for large files	2018-10-29 19:50:34 +01:00
sid.c	sid: Fix an out-of-bounds read in the channel mixing code	2020-03-28 11:43:23 +01:00
smaf.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
SOURCES	codecs: Add support for the 'VTX' ZX Spectrum chiptunes format.	2020-10-09 11:39:25 -04:00
spc.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
speex.c	Fix logf build warnings in speex codec	2020-06-28 03:24:20 +00:00
tta.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
vgm.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
vorbis.c	Clean up places that use #if defined(CPU_ARM | CPU_COLDFIRE | CPU_MIPS)	2021-03-04 14:14:33 +00:00
vox.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
vtx.c	codecs: Add support for the 'VTX' ZX Spectrum chiptunes format.	2020-10-09 11:39:25 -04:00
wav.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
wav64.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
wav_enc.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
wavpack.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
wavpack_enc.c	As3525 wavpack_enc document some intentional switch fall through	2021-08-08 09:27:27 -04:00
wma.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
wmapro.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00
wmavoice.c	Remove explicit 'enum codec_command_action' in codec API	2017-12-07 14:41:59 -05:00